How To Fix TN809 - Maintenance certificate check requires a kernel patch level >= 145

TN809 - Overview

• Message type: E = Error

• Message class: TN - Support Package Manager (SPAM) Messages

• Message number: 809

• Message text: Maintenance certificate check requires a kernel patch level >= 145

What causes this issue?

Check failed for a valid maintenance certificate for system &V2& because
the patch level of the kernel that was used is too low (current patch
level: &V1&).

How to fix this error?

Install a kernel with a least <ZH>patch level 145</>.
Background Information
As of 2009, maintenance certificates are required to be able to install
and maintain SAP software with the Add-On Installation Tool and Support
Package Manager. These maintenance certificates can be requested with
SAP Solution Manager and are distributed to the systems automatically.
For more information, see SAP Support Portal under
http://service.sap.com/maintenancecertificate and SAP Note 1240265.
Component SV-SMG-LIC is also available for reporting an problems or any
further questions.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TN809 - Maintenance certificate check requires a kernel patch level >= 145 ?

  The SAP error message "TN809 Maintenance certificate check requires a kernel patch level >= 145" indicates that the current kernel version of your SAP system is outdated and does not meet the minimum requirements for the maintenance certificate check. This check is essential for ensuring that the system is up to date with the latest patches and security updates.
  
  Cause:
  The error occurs because the kernel version installed on your SAP system is lower than the required version (145 or higher). This can happen if:
  
  The system has not been updated for a long time.
  The kernel patch level was not applied after an upgrade or installation.
  There are specific requirements for certain functionalities or compliance checks that necessitate a newer kernel version.
  
  
  Solution:
  To resolve this issue, you need to update the SAP kernel to the required patch level or higher. Here are the steps to do this:
  
  
  Check Current Kernel Version:
  
  You can check the current kernel